From 362e2a9c6297203bcf7f66bfb51dffb82b42d3b3 Mon Sep 17 00:00:00 2001 From: Andrew MacLeod Date: Mon, 25 Apr 2022 09:56:35 -0400 Subject: Retain existing range knowledge when prefilling statements. When range_of_stmt was adjusted to avoid large recursion depth, we need to intersect the calculated range whth the any known range to avoid losing info. Range_of_stmt does this, but the new prefill code missed it. PR tree-optimization/105276 gcc/ * gimple-range.cc (gimple_ranger::prefill_stmt_dependencies): Include existing global range with calculated value. gcc/testsuite/ * g++.dg/pr105276.C: New. --- gcc/gimple-range.cc | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'gcc/gimple-range.cc') diff --git a/gcc/gimple-range.cc b/gcc/gimple-range.cc index 04075a9..f0caefc 100644 --- a/gcc/gimple-range.cc +++ b/gcc/gimple-range.cc @@ -394,6 +394,10 @@ gimple_ranger::prefill_stmt_dependencies (tree ssa) // Fold and save the value for NAME. stmt = SSA_NAME_DEF_STMT (name); fold_range_internal (r, stmt, name); + // Make sure we don't lose any current global info. + int_range_max tmp; + m_cache.get_global_range (tmp, name); + r.intersect (tmp); m_cache.set_global_range (name, r); } continue; -- cgit v1.1